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Taxon profile

species

Calthalotia fragum (Philippi, 1848)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Trochida »  family Trochidae - top-shells »  genus Calthalotia

Scientific synonyms

Thalotia comptessi T. Iredale, 1931
Thalotia comtessi Iredale, 1931
Thalotia marginata J. E. Tennison-Woods, 1879

Images

Calthalotia fragum

Author: Jan Delsing

Calthalotia fragum

Author: Iredale, T.

Taxon in country check-lists*

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Description

Tall-spired, conical, spire flat-sided, periphery angulate, base steeply inclined and slightly convex; columella smooth, very weakly notched at the base; umbilicus closed; sides of whorls with five beaded spiral ribs, the peripheral one largest, double, and prominent, seven beaded ribs on the base. Light brown, with darker reddish brown spots on the nodules, especially conspicuous on the peripheral rib. Holotype: 2 cm high; 1.35 cm wide.
Source: Wilson, B. 1993. Australian Marine Shells. Prosobranch gastropods. Part one.

Interchangeable taxa

Resembles the western Jujubinus lepidus in form but strongly sculptured. It also resembles Thalotia conica in form. Iredale originally placed this common species in Thalotia but it lacks the columellar teeth which characterise that genus. The condition of the columella and sculpture suggest a relationship to C. arruensis of Queensland.

Distribution

Australia. New South Wales.
Author: Jan Delsing

Links and literature

EN Paleobiology Database [62510]

Paleobiology Database [https://paleobiodb.org/] [as Thalotia marginata Tenison-Woods, 1880]
Data retrieved on: 11 December 2015
EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Thalotia comptessi Iredale, 1931]
Data retrieved on: 22 November 2013

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